Fisheries Management and Ecology最新文献

KRILLSCAN: An automated open‐source software for processing and analysis of echosounder data from the Antarctic krill fishery KRILLSCAN：处理和分析南极磷虾捕捞回声测深仪数据的自动化开源软件

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-09-05 DOI: 10.1111/fme.12739

Sebastian Menze, Gavin J. Macaulay, Guosong Zhang, Andrew D. Lowther, Bjørn A. Krafft

{"title":"KRILLSCAN: An automated open‐source software for processing and analysis of echosounder data from the Antarctic krill fishery","authors":"Sebastian Menze, Gavin J. Macaulay, Guosong Zhang, Andrew D. Lowther, Bjørn A. Krafft","doi":"10.1111/fme.12739","DOIUrl":"https://doi.org/10.1111/fme.12739","url":null,"abstract":"Krillscan software was developed to automatically process echosounder data and achieve an accelerated and transparent analysis of backscatter data that allows calculation of target biomass. Herein, the fishery for Antarctic krill (Euphausia superba, Henceforth Krill) was used as a case study to develop the approach. Implementation of a sustainable management strategy for the krill fishery is complicated by a lack of regularly updated krill abundance data on spatiotemporal scales of the fishery. To increase krill biomass data availability, automatic echosounder data processing and swarm detection software was tested against traditional manual scrutinization with LSSS software and agreed with only minor offsets in estimated nautical area scattering coefficients. In addition to automatic processing and data transfer, Krillscan also has a graphical user interface to supervise automatic krill swarm detection. Echogram size can be compressed up to 100 times and raw data are processed faster than generated, thereby enabling near‐real time analysis and data transfer. Compressed data can be transmitted online to allow fishing vessels to conduct surveys without having scientific personnel with special expertise on board.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Differences in fisher demographics and fishing behaviour from concurrent phone‐recall and smartphone app surveys of recreational angling in south‐western Australia 从对澳大利亚西南部休闲垂钓的电话召回和智能手机应用调查中发现的渔民人口和垂钓行为差异

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-28 DOI: 10.1111/fme.12736

Fabian I. Trinnie, Karina L. Ryan

{"title":"Differences in fisher demographics and fishing behaviour from concurrent phone‐recall and smartphone app surveys of recreational angling in south‐western Australia","authors":"Fabian I. Trinnie, Karina L. Ryan","doi":"10.1111/fme.12736","DOIUrl":"https://doi.org/10.1111/fme.12736","url":null,"abstract":"Traditional methods for collecting robust samples of recreational effort and catch data from offsite mail or telephone surveys are becoming increasingly difficult to obtain. Smartphone applications (apps) that allow recreational fishers to report their effort and catch are a potentially viable data collection tool, but may be biased. We evaluated demographics, effort, and catch of freshwater anglers in south‐west Western Australia by comparing independent data from concurrent phone‐recall and app‐diary surveys for a 12‐month period in 2017–2018. Survey modes differed, with higher proportions of app respondents angling in freshwater and being avid anglers. For both survey modes, unweighted mean effort (days fished) was higher in dams than rivers, but was higher from the phone‐recall survey for dams and rivers. The unweighted distribution of kept and released catches (number of fish per angler) of rainbow trout (Oncorhynchus mykiss) and redfin (Perca fluviatilis) were similar between survey modes, with higher retention of redfin and higher release of rainbow trout. Kept and released rates of freshwater cobbler (Tandanus bostocki) and brown trout (Salmo trutta) were less common in both survey modes. Lower response rates and higher survey participation by avid anglers (≥20 days per year) from the app‐diary survey may bias survey data. Such bias needs to be addressed when using digital data collection methods, along with improving recruitment and retention of app participants.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effectiveness of mass marking of juvenile sterlet (Acipenser ruthenus) with alizarin red S stain on field detection 用茜素红 S 染色剂大量标示鲟鱼幼体对实地检测的效果

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-24 DOI: 10.1111/fme.12737

Martin Šindler, Miloš Buřič, Martin Plesch, Pavel Franta, Bořek Drozd

引用次数: 0

A Delphi‐study to identify drivers of future angling participation in five Nordic countries 在五个北欧国家开展德尔菲研究，以确定未来垂钓参与的驱动因素

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-22 DOI: 10.1111/fme.12735

Stian Stensland, Christian Skov, Sveinn Agnarsson, Patrik Rönnbäck, Teppo Vehanen, Malgorzata Blicharska, Jon Olaf Olaussen, Anders Kagervall, Gustav Hellström, Samuel Blyth, Casper Gundelund, Øystein Aas

引用次数: 0

Fish assemblages and first sale prices from local markets in the Lower Mekong River Basin 湄公河下游流域当地市场的鱼类组合和首次销售价格

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-22 DOI: 10.1111/fme.12734

Quan T. Lai, Ian G. Cowx, Hoang Duc Huy, Nam So

{"title":"Fish assemblages and first sale prices from local markets in the Lower Mekong River Basin","authors":"Quan T. Lai, Ian G. Cowx, Hoang Duc Huy, Nam So","doi":"10.1111/fme.12734","DOIUrl":"https://doi.org/10.1111/fme.12734","url":null,"abstract":"The Mekong River is the most productive inland fishery in the world and identified as a valuable source of hydropower generation. Consequently, benefits of energy production must be traded off against impacts on other ecological and environmental services, especially on fisheries that have been largely downplayed. We surveyed fish markets in 12 provinces in the Lower Mekong River Basin (LMB) to quantify the diversity, abundance and prices of fish species and to account for potential impacts of water infrastructure and development projects. Of 116 species in nine major ecological guilds in markets, potamodromous main channel spawners were the most diverse guild that contributed 30% of species and were present in markets in all countries and sites, whereas anadromous species were the least diverse guild with two species in Vietnam only. More than 45% of fish recorded in local markets in Cambodia and more than 80% in Vietnam were small‐sized fish (<25 cm), whereas about 50% of fish marketed in Lao PDR and Thailand were large‐sized fish (>50 cm). Fish were sold by both size and species, with most species sold in only one size category. The first‐sale price was highest in Lao PDR, followed by Thailand, Vietnam and Cambodia. Our findings provide primary ecological and economic information that can be used to estimate potential economic losses of fisheries when considering trade‐offs between energy and the environment.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Balancing boat‐electrofishing sampling effort against costs for nearshore fish communities in the Toronto waterfront, Lake Ontario 平衡安大略湖多伦多海滨近岸鱼类群落的渔船电鱼取样工作与成本之间的关系

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-09 DOI: 10.1111/fme.12733

S. Theis, Angela Wallace, Brian Graham, Brynn Coey, Lyndsay Cartwright, M. Poesch, Rick Portiss, Jonathan L. W. Ruppert

{"title":"Balancing boat‐electrofishing sampling effort against costs for nearshore fish communities in the Toronto waterfront, Lake Ontario","authors":"S. Theis, Angela Wallace, Brian Graham, Brynn Coey, Lyndsay Cartwright, M. Poesch, Rick Portiss, Jonathan L. W. Ruppert","doi":"10.1111/fme.12733","DOIUrl":"https://doi.org/10.1111/fme.12733","url":null,"abstract":"To enhance management of aquatic systems, long‐term monitoring programs are crucial. However, managers often lack sufficient guidance in decision‐making. In this study, we analyzed nearshore electrofishing data from Lake Ontario spanning 18 years and over 100,000 caught fish to assess sampling designs for various coastal habitats. Using simulation, we evaluated precision of catch per unit effort (CPUE) for all species, piscivores, and specialist species, at different levels of electrofishing sampling effort. For overall CPUE in any habitat type, increased precision declined with additional electrofishing runs, particularly after reaching 30–40 runs. Adjustments in sampling effort, such as adding 10 runs per year for open‐coast sites, increased precision of overall CPUE by 10%. Adding 8 runs per year for wetlands increased precision of specialist‐species CPUE by 10%. However, additional runs in embayments did not increase precision for all species, piscivores, or specialist species. Our findings underscore the importance of considering community composition and abundance when evaluating CPUE precision and illustrates a flexible approach to optimize sampling effort in aquatic monitoring programs.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141923664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal mesh size of traps for marbled flounder (Pseudopleuronectes yokohamae) based on biological and economic factors 基于生物和经济因素的大比目鱼（Pseudopleuronectes yokohamae）最佳诱捕网目尺寸

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-01 DOI: 10.1111/fme.12730

Myungsung Koo, Inyeong Kwon

{"title":"Optimal mesh size of traps for marbled flounder (Pseudopleuronectes yokohamae) based on biological and economic factors","authors":"Myungsung Koo, Inyeong Kwon","doi":"10.1111/fme.12730","DOIUrl":"https://doi.org/10.1111/fme.12730","url":null,"abstract":"Gear selectivity is crucial in fisheries management because it influences the size and species of fish caught, with traditional methods often basing optimal mesh size on the mature length of a target species. However, to ensure sustainable fisheries, both biological aspects of resource protection and fishing operation efficiency must be considered. This study aimed to determine the ideal mesh size for trap fishing of marbled flounder (Pseudopleuronectes yokohamae) in Gyeongsangnam‐do, South Korea, by using biological and economic factors for sustainable fisheries management. We sampled fish caught in traps of varying mesh sizes (35, 50, 65, 80, and 100 mm) and developed two models based on fish maturity, bycatch ratio, and CPUE. Model 1 used a maturity criterion of 17.8 cm, and Model 2 used the legal minimum length limit of 20 cm. Net selectivity curves indicated that the optimal mesh size ranged 50–65 mm based only on a minimum mature body length of 17.8 cm. In contrast, the optimal mesh size based on both biological and economic factors ranged 57.5–90 mm. Our findings could guide policymakers in enhancing marble flounder population management strategies through policy adjustments in mesh size and gear restrictions.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sorting grid usage to reduce the catch of undersized narrow‐clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) in fyke net fisheries 使用分选网格减少在刺网渔业中捕获尺寸过小的窄爪小龙虾（Pontastacus leptodactylus Eschscholtz, 1823）的数量

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-01 DOI: 10.1111/fme.12731

Mehmet Cilbiz, Celalettin Aydın

{"title":"Sorting grid usage to reduce the catch of undersized narrow‐clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) in fyke net fisheries","authors":"Mehmet Cilbiz, Celalettin Aydın","doi":"10.1111/fme.12731","DOIUrl":"https://doi.org/10.1111/fme.12731","url":null,"abstract":"Sustainability of natural stocks of crayfish is critical because of their economic and ecological importance. Crayfish (Pontastacus leptodactylus), one of the most important species in Turkish inland fisheries, has been facing serious threats recently. One threat the species faces is high landed bycatch of undersized crayfish because of selective fishing gear, such as fyke nets. We estimated size‐selectivity of sorting grids with various bar spacings for crayfish to reduce bycatch. Six bar spacings (15.0, 17.5, 20.0, 22.5, 25.0, and 30.0 mm) were tested alongside commercial crayfish fyke nets. Mean selectivity (L50) (±95% CI) was 6.90 (6.63–6.99) cm for 15.0 mm bar spacing, 7.52 (7.16–8.02) cm for 17.5 mm, 8.52 (8.32–8.71) cm for 20.0 mm, 9.70 (9.28–9.90) cm for 22.5, 10.75 (10.34–11.17) cm for 25.0 mm, 11.80 (11.31–12.24) cm for 30.0 mm, and 8.79 (8.05–9.29) cm for commercial fyke nets. The proportion of undersized specimens caught be reduced from 32.27% for commercial fyke nets to as low as 2.46% by using sorting grids. The codend of 22.5 mm bar spacing was more selective, with significantly lower discard rates, and more effective for individuals above the minimum conservation reference size than commercial fyke nets.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Climate change effects on abundance and distribution of the European eel in Türkiye 气候变化对土耳其欧洲鳗鱼数量和分布的影响

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-08-01 DOI: 10.1111/fme.12732

Burcu Mestav, Şükran Yalçın Özdilek, Zahide Acar, Kemal Gökkaya, Nurbanu Partal

引用次数: 0

Existing datasets uncover complex interactions driving catches of a data‐poor recreational fishery in South Australia 现有数据集揭示了南澳大利亚一个数据贫乏的休闲渔业渔获量的复杂互动关系

IF 2 3区农林科学

Fisheries Management and Ecology Pub Date : 2024-07-16 DOI: 10.1111/fme.12727

L. Durante, Crystal Beckmann, Frédéric Bailleul, Greg Ferguson

{"title":"Existing datasets uncover complex interactions driving catches of a data‐poor recreational fishery in South Australia","authors":"L. Durante, Crystal Beckmann, Frédéric Bailleul, Greg Ferguson","doi":"10.1111/fme.12727","DOIUrl":"https://doi.org/10.1111/fme.12727","url":null,"abstract":"Understanding drivers of effort and catch is important for sustainable management of recreational fisheries. For the Pipi (Latona deltoides) fishery in South Australia as a case study, publicly available datasets on fisher demography, market forces and internet connectivity improved understanding of fisher motivations and capabilities, identified different historical periods in the fishery and addressed temporal gaps in effort and catch estimates from on‐site surveys. Most variables were correlated with recreational effort and catch estimates from on‐site surveys and principal component analysis identified 2013–2014, 2015–2018 and 2019–2022 as distinct periods in the Pipi fishery. Results corroborated studies and anecdotal information that suggested declining availability and higher prices of local, commercially caught Pipi, and reduced imports of bivalves from Asia that previously supplied the South Australian bait market. Reduced availability and higher prices of Pipi likely motivated recreational fishers to gather their own bait to increase catch over the years. Similarly, increased internet and smartphone access and increased numbers of utility vehicles aided recreational catch efficiency of Pipi. Effective management of recreationally harvested resources requires understanding of external processes that drive fisher motivations and capabilities, particularly for stocks that are shared among fisheries. The need for improved data on fisher behaviour for management of recreational fisheries can be addressed by leveraging external information from available datasets. We recommend that the temporal gap between surveys should be less than 5 years, supplemented by analysing behavioural information collected from fishers during interviews.","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141641854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0